District of



1 'itnital JULIUS town s? w a: glitters @tfam D DOT FCII, Ill. 1)., Oh WASHING'ION,

DISTRICT or COLUMBIA.

Letters Patent No. 84,451,

dated December 1, i868.

. Wis-(push IMPR6VEMENT IN L RESERVING- MEAT.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may runccru ie it known thatLJULiUs Emuxn DoTcH, lYLll, ol'the city of ashington, District oi Columbia, have invented a new Pro-ess for Preserving Meat; and 1. do hereby declare that the tollowing is a full and exact description thereof. The nature of myinvcntion consists in introdm'in; aldehrde, in the lhltld or gaseous state, or mixtures oi'aldehyde in Jlvceiine, phospin vceric acid. ln'aretatc oisoda, or simply phosplu eric acid, in the body ot'the killed animal, or parts the rot, or in introducing aldehyde vapors in the lungs of the living animal until death occurs.

To enable others skilled in the art to make and use my invention, I will proceed to describe it.

When 1 wish to prepare the whole body of the aidmal for preservation, I open its cervical artery, let the blood run out, and then introduce my antiseptic fluids by means of a three-pump. \Vhen, however, I wish to 'pre 1: only parts of the animal, I subject them to the 1)1t.\. lll'\. of my liquids, either in a cask, which has a small tube screwed tightly in its top, or in an apparatns, such as are used for the process of preserving wood, until the liquid has penetrated into the central parts of the animal tissue.

Though the preserving-fluids may be used in any proportion or strength, I prefer to use a fluid which holds but a small percentage of aldehyde in solution, whemrver 1 use the same, as its object is simply to take up the small amount of oxygen contained in the blood and the water of the meat, and thus to remove one cause of putretiiction.

When a proper quantity of this other is employed, (rideSchlossber-geflsLchrbl rclulm" 01",; .aiapla'a Clio 1.!

fourth edition, lltlgk 296,) it will, by he absoiption of the oxygen, be tral formed into Llt tic acid, which is itself an antiseptic, and the objectionable though c):- ceedingly fragrant smell of the aldehyde will thus entirely disappear.

l havetbund that, in my method for pre ving meat, none of its nutritive. elements are lost, as is the case in salting. The nlcat also retains its appearance, and will taste like ti'esli meat, even after months. Again the phospho-glyccric acid is not only an anflscptm'bilt also a highly nutritive clement, it being a secondary product of decomposition of the oleo-phosphorie acid, which is the chief ingredient of the fatty matter of the liver, the brain, and nerves, and probably, also, of the blood. Oleo-phosphoric acid has also been met with in the yolk of the egg. I therefore accomplish, in this invention, more than can justly be expected.

I cover the meat, when it is ready for packing, with paratiine or stearinc, or. both mixed, whenever such meat is intended to be kept for a long time, or to be transported for a great distance; and that I claim as new, to pack the meats in corn-meal, so as to more effectually prevent them from putretaet-ion.

What I claim as my invention, and desire to secure by Letters .liatent, is

The preserving oi the body of animals, or parts thereof, by the use ofaldehyde, in the gaseous or liquid state, or mixtures of aldehyde in glycerl'ne and phospho-glycerie acid, or acetate of soda and glyeerine, or simply phospho-glyceric acid.

JULIUS EDMUND DUTCH, M. D.

Witnesses:

WM. 1t. CLARK, WM. '1. CLARK. 

